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    1 open pit mining open-pitlimit
    Mining and stripping of useful minerals in open surface mining sites.
    2 open- pit mining boundary open-pitlimit
    The boundary of the recoverable space defined by the bottom and side of the open pit.
    3 stripping ratio strippingratio
    The ratio of the volume or mass of the stripped material within the open pit mining boundary to the volume or mass of the mined ore.
    4 excavation ship mining dredgermining
    The operation of underwater sand mining is carried out by vessels equipped with joint unit facilities.
    5 underground mining undergroundmining
    From the surface to the ground, a series of wells and tunnels are drilled into the ore body, and a complete production system of lifting, transportation, ventilation, drainage, power supply, gas supply, water supply and other auxiliary production systems and mining of useful minerals is established.
    6 deposits to develop depositdevelopment
    A series of wells and tunnels are drilled from the surface to reach the ore body to form a complete system of lifting, transportation, ventilation, drainage, water supply and power supply.
    7 open field mining method open-stopemining
    In the process of mining, it mainly relies on the stability of the surrounding rock itself or the support capacity of a small number of pillars to maintain a stable mining method in the goaf.
    8 filling mining method backfillingmethod
    After the mining face is advanced to a certain distance, the filling area is filled with filling materials to control the mining method of the mining site pressure.
    9 caving mining method cavingmining
    As the mining work progresses, the upper part of the ore body is covered with rock and the surrounding rock is filled with the surrounding rock to fill the goaf to control the mining site pressure and to treat a type of mining method in the goaf.
    10 “three down†mining miningundersurfacewater-body , buildingorrailway
    It refers to the surface water, mining deposits under Construction work material, structure or railway.
    11 shaft lift shafthoisting
    A wire rope is used in the shaft to lift and lift the container for lifting and transporting.
    12 inclined well (slope) lifting inclinedshafthoisting
    The use of wire rope to lift the lifting container for transport in inclined roadways or open slopes.
    13 lifting wire rope hoistingrope
    A wire rope used to suspend the lifting container along the wellbore for linear movement up and down.
    14 ropes headrope
    Friction lifting suspends the wire rope of the lifting container. Also known as the main rope.
    15 tail rope tailrope
    A wire rope that is suspended in the bottom of the two lifting containers for balancing.
    2. Symbol
    1 stress, joint
    σ V — vertical stress;
    σ H — horizontal stress;
    J n — the coefficient of the number of joint groups;
    J r — joint roughness factor;
    J a — the coefficient of influence of the alteration or transmutation;
    J w — joint water removal factor;
    SRF - stress reduction factor;
    J v — the number of rock mass joints.
    2 production capacity
    A — mine production capacity;
    A P — open pit production capacity;
    Q P - the average production capacity of a single excavator;
    V b — rig rig efficiency;
    Q T — the production capacity of water guns for mining rock;
    Q — sand ore rock and rock production capacity;
    Q d — mining ship production capacity;
    Q r — Daily filling capacity.
    3 length, distance, height, range
    L P - the length of the mining work line that can be placed in a single mining step;
    L o — the length of the working line occupied by a single excavator;
    L min — the minimum distance of the water gun from the working surface;
    L — the range of the water gun;
    H — stage height, step height, lift height;
    L g - over-roll distance
Non-ferrous metal mining design terms and symbols
    1. Terminology